| Microcystis aeruginosa: source of toxic microcystins in drinking water PJ Oberholster, AM Botha, JU Grobbelaar African Journal of Biotechnology 3 (3), 2004 | 220 | 2004 |
| State of the nation report: An overview of the current status of water quality and eutrophication in South African rivers and reservoirs PJ Oberholster, PJ Ashton Parliamentary Grant Deliverable. Pretoria: Council for Scientific and …, 2008 | 171 | 2008 |
| An overview of cyanobacterial bloom occurrences and research in Africa over the last decade LL Ndlela, PJ Oberholster, JH Van Wyk, PH Cheng Harmful Algae 60, 11-26, 2016 | 154 | 2016 |
| Responses of phytoplankton upon exposure to a mixture of acid mine drainage and high levels of nutrient pollution in Lake Loskop, South Africa PJ Oberholster, JG Myburgh, PJ Ashton, AM Botha Ecotoxicology and environmental safety 73 (3), 326-335, 2010 | 119 | 2010 |
| Biological and chemical evaluation of sewage water pollution in the Rietvlei nature reserve wetland area, South Africa PJ Oberholster, AM Botha, TE Cloete Environmental Pollution 156 (1), 184-192, 2008 | 114 | 2008 |
| Bioaccumulation of aluminium and iron in the food chain of Lake Loskop, South Africa PJ Oberholster, JG Myburgh, PJ Ashton, JJ Coetzee, AM Botha Ecotoxicology and Environmental Safety 75, 134-141, 2012 | 109 | 2012 |
| Identification of toxigenic Microcystis strains after incidents of wild animal mortalities in the Kruger National Park, South Africa PJ Oberholster, JG Myburgh, D Govender, R Bengis, AM Botha Ecotoxicology and Environmental Safety 72 (4), 1177-1182, 2009 | 101 | 2009 |
| The effects of engineered nanoparticles on survival, reproduction, and behaviour of freshwater snail, Physa acuta (Draparnaud, 1805) N Musee, PJ Oberholster, L Sikhwivhilu, AM Botha Chemosphere 81 (10), 1196-1203, 2010 | 91 | 2010 |
| Toxic cyanobacterial blooms in a shallow, artificially mixed urban lake in Colorado, USA PJ Oberholster, AM Botha, TE Cloete Lakes & Reservoirs: Research & Management 11 (2), 111-123, 2006 | 91 | 2006 |
| Value stream mapping as a supporting management tool to identify the flow of industrial waste: A case study Y Schoeman, P Oberholster, V Somerset Sustainability 13 (1), 91, 2020 | 74 | 2020 |
| Health risk implications from simultaneous exposure to multiple environmental contaminants B Genthe, WJ Le Roux, K Schachtschneider, PJ Oberholster, ... Ecotoxicology and environmental safety 93, 171-179, 2013 | 72 | 2013 |
| The influence of a toxic cyanobacterial bloom and water hydrology on algal populations and macroinvertebrate abundance in the upper littoral zone of Lake Krugersdrift, South Africa PJ Oberholster, AM Botha, PJ Ashton Ecotoxicology 18, 34-46, 2009 | 62 | 2009 |
| Using heavy metal pollution indices to assess water quality of surface and groundwater on catchment levels in South Africa E Atangana, PJ Oberholster Journal of African Earth Sciences 182, 104254, 2021 | 52 | 2021 |
| An overview of toxic freshwater cyanobacteria in South Africa with special reference to risk, impact and detection by molecular marker tools PJ Oberholster, AM Botha, TE Cloete Biokemistri 17 (2), 57-71, 2005 | 51 | 2005 |
| Chemical characteristics and limnology of Loskop Dam on the Olifants River (South Africa), in light of recent fish and crocodile mortalities J Dabrowski, PJ Oberholster, JM Dabrowski, J Le Brasseur, J Gieskes Water SA 39 (5), 675-686, 2013 | 49 | 2013 |
| River catchment responses to anthropogenic acidification in relationship with sewage effluent: An ecotoxicology screening application PJ Oberholster, AM Botha, L Hill, WF Strydom Chemosphere 189, 407-417, 2017 | 47 | 2017 |
| Bacteria as biological control agents of freshwater cyanobacteria: is it feasible beyond the laboratory? LL Ndlela, PJ Oberholster, JH Van Wyk, PH Cheng Applied microbiology and biotechnology 102, 9911-9923, 2018 | 46 | 2018 |
| Bioleaching of metals from e-waste using microorganisms: a review AI Adetunji, PJ Oberholster, M Erasmus Minerals 13 (6), 828, 2023 | 45 | 2023 |
| Assessment of the effect of nanomaterials on sediment-dwelling invertebrate Chironomus tentans larvae PJ Oberholster, N Musee, AM Botha, PK Chelule, WW Focke, PJ Ashton Ecotoxicology and environmental safety 74 (3), 416-423, 2011 | 43 | 2011 |
| An ecotoxicological screening tool to prioritise acid mine drainage impacted streams for future restoration PJ Oberholster, B Genthe, P Hobbs, PH Cheng, AR De Klerk, AM Botha Environmental Pollution 176, 244-253, 2013 | 38 | 2013 |
